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Investigation and modelling of damping mechanisms of magnetorheological elastomers
Author(s) -
Shuib Raa Khimi,
Pickering Kim Louise
Publication year - 2016
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.43247
Subject(s) - materials science , magnetorheological fluid , elastomer , composite material , natural rubber , magnetism , isotropy , magnetic damping , anisotropy , magnetic field , condensed matter physics , vibration , physics , quantum mechanics
ABSTRACT Damping in MREs is considered to be ascribed to viscous flow of the rubber matrix, interfacial damping at the interface between the magnetic particles and the matrix and magnetism induced damping. In this study, individual components in MREs that contribute to material damping were investigated. A model was developed to include viscous flow of the rubber matrix, interfacial damping and magnetism induced damping to give the total damping capacity of MREsψ M R E( ψ M R E)It was found thatψ M R Edepends on frequency, iron sand content, strain amplitude andψ M R Eis independent of the applied magnetic field over saturation magnetization. The proposed model was assessed experimentally using a series of isotropic and anisotropic MREs. Comparison between tan δ withψ M R Eshowed thatψ M R Ematched the experimental trends with average percentage difference of 8.1% and 21.8% for MREs with modified iron sand unmodified iron sand, respectively. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43247.